Cutting mechanism.



W'ziin eases.-

T. E. RAFFEL.

CUTTING TviECHANISM.

APPLICATION FILED 00121 m2.

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T. E. RAFFEL.

(JU'ITING MECHANISM.

APPLICATION nun 0015,1912v 1,085,856 Patented Jan. 27, 1914.

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TOBIAS E. RAIEFEL OF NEW' YORK, N. Y., ASSIGNOR TO PAPER WORKINGMACHINES C0,, A CORPORATION OF NEW YORK.

Specification of Letters Patent.

Patented Jan. 27,191'1t.

Original application filed February 2, 1912, Serial No. 674.976. Dividedand this application filed October 5, 1912. Serial No. 724,039.

My invention relates to a cutting mechanism for a machine formanufacturing double faced corrugated board, and this application is adivision of my original application, Serial No. 674,976 filed February2, 1912 Patent No. 1,050,292 of January 14th. 1913. v

The object of my invention is to provide a cutting mechanism of novelconstruction and arrangement of parts for automatically cutting the webinto sheets of any desired length and delivering the sheets from themachine. y

In the accompanying drawings illustrat ing my invention, Figure lis aside eleva tion of the cutting mechanism; Fig. 2 is a detailed elevationof the cutter actuating cam; Fig. 3 is a front elevation of the knife;Fig. f is a top plan view of the delivery bed: Fig. 5 is an endelevation of the same; Fig. 6 is a section in elevation through thecutter controlling clutch; F ig. 7 is a detailed elevation of thefriction disk; Fig. 8 is an end elevation of the feeding. mechanismclutch. and Fig. 9 is a side elevation partly in section of the same.

After the" board (1) leaves the machine it is carried beyond the cutter(17) on to the delivery bed, which is arranged to support the boardwhile it is being cut, and then to automatically deliver the cut sheetsfrom the machine. To this end I provide a pair of parallel supports(18), spaced apart a distance slightly less than the width of the board,each of which is carried on the two adjustable arms (19) mounted forendwise movement in a frame (20). By adjusting the position of the arms(.19) the distance between the supports (18) may be varied toaccommodate boards of different width.

Each of the movable arms ('19) is provided with a rack (21) on which ismounted a pinion he pinions of the two arms of each support- (18) areconnected by a suitable spindle (23) so as to rotate together. It willbe seen that in ordeg to separate or their original position.

bring together the supports (18) it is necessary to cause the opposedpairs of pinions to rotate in opposite directions. This may beaccomplished by securing to the spindles (23) the lever arms (24;),which are inclined towardeach other as seen in Fig. 6, and are connectedby means of the rods (25) to the rear ends of the rocker arms (26), theforward ends of which bear upon the cams (27)fixed to the rotatableshaft (28) of the cutter actuating mechanism. These cams (27) arearranged to tilt the rocker arms (26) immediately after movable cutterblade (29) has descended, and thereby cause the supports (18) toseparate, thus allowing. the cut sheet to drop from the machine, afterwhich the supports are returned to To this end it is necessary to havethe position of the cams (27) lag slightly behind the cam (34) whichactuatcs the cutter.,

The cutter mechanism comprises a stationary blade (17) and a verticallyreciprocating blade (29) disposed transversely of the machine. I preferto have the movableblade (29) formed with adouble beveled edge as shownin Fig. 3 so that in descend ing it will first engage the board at itsedges and out toward the center, thus holding the board in positionduring the operation. The blade is secured to the rear end of a pivotedbeam (3O) the forward end of which is reciprocated by a pitman (31)having a pin (32) which works in an eccentric groove (33) formed inthecam (34) fixed to the rotatable shaft "(28). The shaft (28) isnormally at rest and the rotation thereof is controlled by a suitablefriction clutch which is arranged to be thrown. by means of a trippingdevice automatically actuated by the edge of the board as it advances inthe machine.

The friction clutch, as preferably constructed, comprises a toothedflanged disk (35) which is loosely carried on the shaft (28) and mesheswith a pinion (36) fastoned to the main driving shaft of the ma chine.The disk (35) is held in surface contact with a friction disk (37),keyed to the shaft (28). by means of a spring (38) coiled about theshaft and acting against a fixed collar (39).

The friction disk (37) is normally held against rotation by theengagement of the the disk (37).

with the forprojecting pin or stud (40) (41) of the ward end of therocker arm tripping device. the pin (40) is released the friction disk(37) will be free to rotate with its companion driven disk (35). As theshaft (28) is fixed to the disk (37) it will also be caused to rotate,and through the cams and (34) carried on said shaft it will operate thedelivery The clutch tripping device comprises a push plate (42) which isadjust-ably suspended, in the. path of travel of the board, from ahorizontal bar (43) conveniently supported for endwise movement aboveand approximately parallel to the longitudinal center line of themachine. As the advancing edge of the board strikes the plate it willpush the latter slightly rearwardly and the motion transmitted throughthe bar the bell crank and the connecting rod (45) will depress theforward end of the rocker arm (41) thereby releasing it from engagementwith the pin The length of the cut sheets may be varied at will bysimply adjusting the position of the measuring pan toward or away fromthe cutter.

A cam plate (46) is secured to the inner face of the disk (37)immediately behind the pin (40). This cam is adapted to en gage the freeend of the rocker arm (41) after it is disengaged from the pin (49) andto further depress it so as to "cause the pan (42) to be shiftedslightly rearwardly in order to make allowance for the thickness-of thecutting blade and thereby prevent the sheet from buckling while it isbeing cut.

It is desirable that the feeding rolls (16) should come to rest whilethe board is being out. To this end I provide a suitable friction clutchwhich is arranged to automatically throw the feeding mechanism out ofgear with the power shaft during the cutting operation. A chain drivenfrom a sprocket (47 fixed to the power shaft continuously rotates thesprocket (48) and its attached friction shell or drum (49), both ofwhich turn loosely on the shaft (50). A split ring (51), disposed withinthe flange of the drum (49), and keyed to the shaft (50) is normallymaintained in expanded position so as to rotate with the said drum, byengagement of the expanding wedge or lever withthe projecting stud (53),fixed to the movable member (54) which slides upon a key or featherfastened to the said shaft (50). A lever arm (55),secured at its endsrespectively to the pitman (31) and i the movable member (54) isarranged for actuation by the upward movement of the pitman to slide themovable member out of engagement with the fixed parts of the clutch andthereby make the connection be- It will be seen that when bed and cuttermechanism.

(40) and freeing tween the power shaft and the feeding mechanisminoperative during the cutting operation, after which, by a downwardmovement of the pitman, the clutch is again set in operative position.

In the foregoing specificationI have described the preferred form andmode of operation of my machine, but it will be apparent to thoseskilled in the art that various,

modifications may be made in the arrangement and construction of the)arts thereof without departing from the splrit and scope of myinvention.

What I claim is:

1. In a cutting mechanism, the combination of a driving'shaft, amechanism for feeding apaper web driven thereby, a pivoted cutter barhaving a vertically movable cutter blade secured to one end and a pitmanto the other, a cutter shaft, an eccentric on said shaft for actuatingthe pitman to reciprocate the cutter, a push plate adjustably suspendedin the path of travel of the web, a clutch for connecting the cuttershaft to the driving shaft, and connections between the push plate andthe clutch operative upon displacement of the push plate to connect thecutter to the driving shaft.

2. In a cutting mechanism, the combination of a driving shaft, amechanism for feeding a paper web ciprocating cutter, a pitman forreciprocating thecutter, a normally inactive cutter shaft carrying aneccentric adapted to actuate the pitman upon rotation of the shaft, apush plate adjustably suspended in the path of travel of the web, aclutch having a friction member fastened to the cutter shaft, a

. trip normally restraining the rotation of said friction member,connections between the push plate and the trip operative upon driventhereby, a redisplacement of the push plate to release said' frictionmember, and means for causing the push plate to recede from the web,

during the cutting operation so as to prevent buckling of the sheet.

3. In a cutting mechanism, the combination of a driving shaft, amechanism for feeding a'paper web driven thereby, a reciprocatingcutter, means for automatically actuating the cutter to sever sheets ofde sired lengths from the web, a clutch normally connecting the feedingmechanism to the driving shaft, and means actuated by the movement ofthe cutter to automatically disconnect the feeding mechanism while thesheet is being cut.

4. In a cutting mechanism, the combination of means for feeding a paperweb, a normally. inactive vertically reclprocating cutter, means havmg amember disposed in the path -of travel of the web for setting thecutting mechanism into action to cut a sheet of predetermined lengththerefrom, two rods normally supporting the web under the lateral edgesand mounted to moye In testimony whereof I have signed this toward endaway from each other in a, specification in the presence of twosublongitudlnal plane, and means coiiperative scribing Witnesses.

With the cutter operating mechanism and TOBIAS E. RAFF EL. 5 timed toseparate the Web supports after Witnesses:

the descent of the cutter to deliver the out LESTER F. DI'ITENHOEFER,

sheet. LESTER FLORsEmIM.

